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Bunker Hill Mining Company
The Bunker Hill Mining Company is a mining company with facilities in Kellogg and Wardner, Idaho. Early history Simeon Reed bought the Bunker Hill Mine and Mill, and incorporated the Bunker Hill and Sullivan Mining and Concentrating Company on 29 July 1887. John Hays Hammond was hired to manage the mine, and a new concentrator, The Old South Mill, became operational in 1891, capable of 150 tons per day. Hammond became president on 2 July 1891, followed by Nathaniel H. Harris on 15 June 1893, when company headquarters were located in San Francisco. William Henry Crocker, of Crocker National Bank, served as treasurer, in addition to being the major stockholder. When the mining boom began in the Coeur d'Alene, Idaho mining district, the area was lightly inhabited. The Bunker Hill and the Sullivan companies built a boarding house for miners in 1887. By 1894, the company employed 332 workers, and in the late 1890s, the company built single-family houses to attract family men. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kellogg, Idaho
Kellogg is a city in the Silver Valley of Shoshone County, Idaho, United States, in the Idaho Panhandle region. The city lies near the Coeur d'Alene National Forest and about 36 miles (58 km) east-southeast of Coeur d'Alene along Interstate 90. As of the 2010 United States Census, the city had a total population of 2,120, down by a third from its population in 1980. History Kellogg was incorporated in 1907. The city limits included mine property in 1955, and smelter property in 1956. The population in 1960 was about 6000. Kellogg is named after a prospector named Noah Kellogg. After nearly a century of bustling activity in the mines, including a history of disputes between union miners and mine owners, the Bunker Hill Mine (& smelter) closed in 1981, leaving thousands out of work and a history of lead contamination. Other mines reduced operations, as well. Since the mines have closed, Kellogg has been moving more towards a resort town; the development of new con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Burke, Idaho
Burke is a ghost town in Shoshone County, Idaho, United States, established in 1887. Once a thriving silver, lead and zinc mining community, the town saw significant decline in the mid-twentieth century after the closure of several mines. In its early years, Burke was home to the Hercules silver mine, the owners of which were implicated in the Idaho mining wars of 1899. Both the Hecla and Star mines also operated out of Burke, and the town was a significant site during the 1892 Coeur d'Alene labor strike. Burke's location within the narrow Burke Canyon resulted in unique architectural features, such as a hotel built above the railway and Canyon Creek, with the train track running through a portion of the hotel lobby. After several natural disasters and years of decline in the mid-twentieth century, Burke mining operations finally ceased in 1991 with the closing of the Star mine. In 2002, about 300 people lived in or nearby Burke Canyon, though Burke itself had no residents. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electrolysis
In chemistry and manufacturing, electrolysis is a technique that uses direct electric current (DC) to drive an otherwise non-spontaneous chemical reaction. Electrolysis is commercially important as a stage in the separation of elements from naturally occurring sources such as ores using an electrolytic cell. The voltage that is needed for electrolysis to occur is called the decomposition potential. The word "lysis" means to separate or break, so in terms, electrolysis would mean "breakdown via electricity". Etymology The word "electrolysis" was introduced by Michael Faraday in 1834, using the Greek words "amber", which since the 17th century was associated with electrical phenomena, and ' meaning "dissolution". Nevertheless, electrolysis, as a tool to study chemical reactions and obtain pure elements, precedes the coinage of the term and formal description by Faraday. History In the early nineteenth century, William Nicholson and Anthony Carlisle sought to further ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sulphate
The sulfate or sulphate ion is a polyatomic anion with the empirical formula . Salts, acid derivatives, and peroxides of sulfate are widely used in industry. Sulfates occur widely in everyday life. Sulfates are salts of sulfuric acid and many are prepared from that acid. Spelling "Sulfate" is the spelling recommended by IUPAC, but "sulphate" was traditionally used in British English. Structure The sulfate anion consists of a central sulfur atom surrounded by four equivalent oxygen atoms in a tetrahedral arrangement. The symmetry is the same as that of methane. The sulfur atom is in the +6 oxidation state while the four oxygen atoms are each in the −2 state. The sulfate ion carries an overall charge of −2 and it is the conjugate base of the bisulfate (or hydrogensulfate) ion, , which is in turn the conjugate base of , sulfuric acid. Organic sulfate esters, such as dimethyl sulfate, are covalent compounds and esters of sulfuric acid. The tetrahedral molecular geometry of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sulphuric Acid
Sulfuric acid (American spelling and the preferred IUPAC name) or sulphuric acid ( Commonwealth spelling), known in antiquity as oil of vitriol, is a mineral acid composed of the elements sulfur, oxygen and hydrogen, with the molecular formula . It is a colorless, odorless and viscous liquid that is miscible with water. Pure sulfuric acid does not exist naturally on Earth due to its strong affinity to water vapor; it is hygroscopic and readily absorbs water vapor from the air. Concentrated sulfuric acid is highly corrosive towards other materials, from rocks to metals, since it is an oxidant with powerful dehydrating properties. Phosphorus pentoxide is a notable exception in that it is not dehydrated by sulfuric acid, but to the contrary dehydrates sulfuric acid to sulfur trioxide. Upon addition of sulfuric acid to water, a considerable amount of heat is released; thus the reverse procedure of adding water to the acid should not be performed since the heat released may ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zinc Smelting
Zinc smelting is the process of converting zinc concentrates ( ores that contain zinc) into pure zinc. Zinc smelting has historically been more difficult than the smelting of other metals, e.g. iron, because in contrast, zinc has a low boiling point. At temperatures typically used for smelting metals, zinc is a gas that will escape from a furnace with the flue gas and be lost, unless specific measures are taken to prevent it. The most common zinc concentrate processed is zinc sulfide,. which is obtained by concentrating sphalerite using the froth flotation method. Secondary (recycled) zinc material, such as zinc oxide, is also processed with the zinc sulfide.. Approximately 30% of all zinc produced is from recycled sources. Methods There are two methods of smelting zinc: the pyrometallurgical process and the electrolysis process. Both methods are still used. Both of these processes share the same first step: roasting. Roasting Roasting is a process of oxidizing zinc sulfide ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hecla Mining
Hecla Mining is a gold, silver and other precious metals mining company based in Coeur d'Alene, Idaho. Founded in 1891, is the second-largest mining company that produces silver in the country. This area is known as the Silver Valley (Idaho). In 1983, this entire area was designated as a Superfund site by the Environmental Protection Agency, because of land, water, and air contamination resulting from a century of mostly unregulated silver and gold mining. History James Toner filed the Hecla claim on 5 May 1885. He passed on the claim to A.P. Horton, who sold it to George W. Hardesty and Simon Healey. Patrick (Patsy) Clark owned the claim outright by 1 July 1891. On 29 Sept. 1891, Clark formed the Hecla Mining Company with Albert Gross and Charles Kipp. On 14 Oct. 1891, the company was incorporated in Idaho by Clark, Charles Kipp, John A. Finch, Amasa B. (Mace) Campbell, John Dorsey, Healey and Hardesty, and 500,000 shares issued. By 1897, the mine had three tunnels a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electrolytic
An electrolyte is a medium containing ions that is electrically conducting through the movement of those ions, but not conducting electrons. This includes most soluble salts, acids, and bases dissolved in a polar solvent, such as water. Upon dissolving, the substance separates into cations and anions, which disperse uniformly throughout the solvent. Solid-state electrolytes also exist. In medicine and sometimes in chemistry, the term electrolyte refers to the substance that is dissolved. Electrically, such a solution is neutral. If an electric potential is applied to such a solution, the cations of the solution are drawn to the electrode that has an abundance of electrons, while the anions are drawn to the electrode that has a deficit of electrons. The movement of anions and cations in opposite directions within the solution amounts to a current. Some gases, such as hydrogen chloride (HCl), under conditions of high temperature or low pressure can also function as electrolytes. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
White Lead
White lead is the basic lead carbonate 2PbCO3·Pb(OH)2. It is a complex salt, containing both carbonate and hydroxide ions. White lead occurs naturally as a mineral, in which context it is known as hydrocerussite, a hydrate of cerussite. It was formerly used as an ingredient for lead paint and a cosmetic called Venetian ceruse, because of its opacity and the satiny smooth mixture it made with dryable oils. However, it tended to cause lead poisoning, and its use has been banned in most countries. White lead compounds known as lead soap were also used as additive for lubricants for bearings and in machine shops. Lead soap was also used as an oil drying agent for paints made with drying oil or air drying paints made with alkyd resins. Lead is often used with cobalt driers. Lead free substitutes have been developed to replace this use of lead in paint. History What is commonly known today as the "Dutch method" for the preparation of white lead was described as early as Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ASARCO
Asarco LLC (American Smelting and Refining Company) is a mining, smelting, and refining company based in Tucson, Arizona, which mines and processes primarily copper. The company has been a subsidiary of Grupo México since 1999. Its three largest open-pit mines are the Mission, Silver Bell and Ray mines in Arizona. Its mines produce of copper a year. Asarco conducts solvent extraction and electrowinning at the Ray and Silver Bell mines in Pima County, Arizona, and Pinal County, Arizona, and operates a smelter in Hayden, Arizona. Asarco's smelting plant in El Paso, Texas, was suspended in 1999 and then demolished on April 13, 2013. Before closing, the plant produced of anodes each year. Refining at the mines as well as at a copper refinery in Amarillo, Texas, produce of refined copper each year. Asarco's hourly workers are primarily represented by the United Steelworkers. Asarco has 20 superfund sites across the United States, and it is subject to considerable li ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Smelterville, Idaho
Smelterville is a city in Shoshone County, Idaho, United States. The population was 627 at the 2010 census. The town was named in 1929 by a voice vote of its residents; the other choices were Van Rena and Silver City (already used in southwestern Idaho). The presence of the Bunker Hill smelter, which started operating in 1917, caused the name to be selected. Geography Smelterville is located at (47.542690, -116.179281), at an elevation of above sea level. According to the United States Census Bureau, the city has a total area of , all of it land. Demographics 2010 census As of the census of 2010, there were 627 people, 305 households, and 154 families residing in the city. The population density was . There were 370 housing units at an average density of . The racial makeup of the city was 95.4% White, 0.5% African American, 1.8% Native American, 0.2% Pacific Islander, 0.6% from other races, and 1.6% from two or more races. Hispanic or Latino of any race were 4.6% of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mullan, Idaho
Mullan is a city in the northwest United States, located in the Silver Valley mining district of northern Idaho. The population was 646 at the 2020 census and 692 at the 2010 census, and 840 in 2000. In Shoshone County at the east end of the Silver Valley, Mullan is in a sheltered canyon of the Coeur d'Alene Mountains at an elevation of above sea level. The entrance to the Lucky Friday mine is several hundred yards east of the city center; the active mine (silver, lead, & zinc) descends more than below the surface. Interstate 90 runs by the city's south side, and the Montana border at Lookout Pass is east at above sea level. History Mullan came into existence in 1884 with the discovery of gold at the Gold Hunter Mine, which turned out to be a lead and silver producer. That same year, George Good made a lead-silver strike with the Morning Mine and Mullan came into existence between the two mines. The site was filed in August 1888, after the village had twenty log and f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
